Synthesis, phase stability, structural, and physical properties of 11‐type iron chalcogenides

2016/06/03 by Sahana Rößler, Cevriye Koz, Steffen Wirth +2
Biochemistry, Genetics and Molecular Biology · Chemistry · Materials Science · Physics and Astronomy · #Amyloidosis: Diagnosis, Treatment, Outcomes #Chemistry #Computer science #Crystal Structures and Properties #Geology #Iron-based superconductors research #Materials science #Phase (matter) #Stability (learning theory) #Type (biology) #cond-mat.supr-con

paper · pdf · doi:10.1002/pssb.201600149

published as Phys. Status Solidi B, 2016 · 14 pages, 12 figures, Feature Article, Part of Special Issue on Iron-Based High Temperature Superconductors

arxiv created 2016/06/03 · arxiv updated 2016/06/06 · openalex publication_date 2016/06/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Abstract This article reviews recent experimental investigations on two binary Fe‐chalcogenides: FeSe and Fe Te. The main focus is on synthesis, single crystal growth, chemical composition, as well as on the effect of excess iron on structural, magnetic, and transport properties of these materials. The structurally simplest Fe‐based superconductor Fe Se with a critical temperature 8.5 K undergoes a tetragonal to orthorhombic phase transition at a temperature 87 K. No long‐range magnetic order is observed down to the lowest measured temperature in Fe Se. On the other hand, isostructural Fe Te displays a complex interplay of magnetic and structural phase transitions in dependence on the tuning parameter such as excess amount of Fe or pressure, but it becomes a superconductor only when Te is substituted by a sufficient amount of Se. We summarize experimental evidence for different competing interactions and discuss related open questions. Single crystals of FeSe grown by chemical vapor transport

Citations

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